Cho FT [ x ( n ) ] = X ( e j w ) thì   F T [ e j ω 0 n được xác định như sau:

$FT\left[e{}^{j\omega {}_{1}n}x\left(n\right)\right]=X\left(e{}^{j\left(\omega -\omega {}_2\right)}\right)$

$FT\left[e{}^{j\omega ,n}x\left(n\right)\right]=X\left(e{}^{j\left(\omega +\omega {}_n\right)}\right)$

$FT\left[e{}^{j\omega {}_{n}n}x\left(n\right)\right]=-X\left(e{}^{j\left(\omega +\omega {}_0\right)}\right)$

$FT\left[e{}^{j\omega {}_{n}n}x\left(n\right)\right]=-X\left(e{}^{j\left(\omega -\omega {}_n\right)}\right)$